The symptoms of "Eryang" are very mild, and from the perspective of Chinese medicine, it belongs to the wind and heat cold. The elderly, those who have not been vaccinated, and people with underlying diseases are people of high clinical concern and need key protection.

Children and adolescents are all yang fever constitution, often eat fast food, drink carbonated drinks, the body will produce heat accumulation. They are more likely to spread outward after infection, because children are more exposed to people and more easily contagious.